Seaquel
SQL Server error code

SQL Server error 2204

SQL Server raises error 2204 at severity 16, which marks a problem with the query or data that you can correct.

%sOnly 'http://www.w3.org/2001/XMLSchema#boolean?' or 'node()*' expressions allowed in conditions and with logical operators, found '%ls'
Msg2204
Severity16
Group2000–2999

Source: Database Engine events and errors